Question

an element to 3rd period and 17th group of the periodic table find out ?1 the electronic configuration of element on its left and right ?2its valence electrons?3 its size with in composition with neighboring element ?​

Answer 1

Answer:

1) Is2 2s2 2P6 3s2 3P5

2) It has 7 valence electrons

3) It has a smallest size as it belongs to group 17 and its neighboring element has a comparatively larger size.